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                圈地计划                </h1>
                <p>时间限制：2s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><p>最近房地产商GDOI(Group of Dumbbells Or Idiots)从NOI(Nuts Old Idiots)手中得到了一块开发土地。据了解，这块土地是一块矩形的区域，可以纵横划分为N&times;M块小区域。GDOI要求将这些区域分为商业区和工业区来开发。根据不同的地形环境，每块小区域建造商业区和工业区能取得不同的经济价值。更具体点，对于第i行第j列的区域，建造商业区将得到Aij收益，建造工业区将得到Bij收益。另外不同的区域连在一起可以得到额外的收益，即如果区域(I,j)相邻（相邻是指两个格子有公共边）有K块（显然K不超过4）类型不同于(I,j)的区域，则这块区域能增加k&times;Cij收益。经过Tiger.S教授的勘察，收益矩阵A,B,C都已经知道了。你能帮GDOI求出一个收益最大的方案么？</p></p><hr/><h3>输入格式</h3><p><p>输入第一行为两个整数，分别为正整数N和M，分别表示区域的行数和列数；第2到N+1列，每行M个整数，表示商业区收益矩阵A；第N+2到2N+1列，每行M个整数，表示工业区收益矩阵B；第2N+2到3N+1行，每行M个整数，表示相邻额外收益矩阵C。第一行，两个整数，分别是n和m（1&le;n，m&le;100）；</p>
<p><span style="font-family: Helvetica, 'Microsoft Yahei', verdana; font-size: 14px; line-height: 15.333333015441895px;">任何数字不超过1000&rdquo;的限制</span></p></p><hr/><h3>输出格式</h3><p><p>输出只有一行，包含一个整数，为最大收益值。</p></p><hr/><h3>样例输入</h3><pre>3 3
1 2 3
4 5 6
7 8 9
9 8 7
6 5 4
3 2 1
1 1 1
1 3 1
1 1 1
</pre><hr/><h3>样例输出</h3><pre>81
【数据规模】
对于100%的数据有N,M≤100
</pre><hr/><h3>提示</h3><p><p>&nbsp;数据已加强，并重测--2015.5.15</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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